After a brutal incident of teasing and feeling overwhelmed by troubles at home and feelings of inadequacy, Scootaloo runs away from a class outing in tears. Sweetie Belle and Apple Bloom try to comfort her, and in the process of chasing after a thief, the Cutie Mark Crusaders find themselves caught up in a whirlwind adventure in a land separated from Equestria, a world of magical and sapient birds. As Scootaloo makes friends throughout this new land, she gleans important lessons from their lives. But the Cutie Mark Crusaders and their rivals, Diamond Tiara and Silver Spoon, will have to gather more courage than they've ever known, as another war builds on the horizon. They would have to rely on each other, their strengths and their loves to survive. And as they try to find their way back home, they discover they may hold the key to finding the lost Peacock Prince and healing the broken spirit of the Swan Queen, and maybe ultimately keeping a realm from collapsing into darkness.